Not a fan of any device I have to buy a separate protection cover for, one that doesn't stay on it and not come off to become a useless item I have to put somewhere while I'm using the device. How is that portable friendly? Making the keyboard a part of a cover that protects the screen is simply a much better idea.
Also, not a fan of 16:9, and while it might provide a technically superior screen than the Apple Retina, the Retina remains a better option for me since it has a 16:10 display.